CUBE TEXTURE CONTROL BY RETAINING FROM COLUMNAR GRAINS IN A Fe-3Si ALLOY

摘要

In this study, cold rolling to different strains, with different inter-pass reheating processes, was performed on columnar grains in a Fe-3%Si alloy to control cube texture by retaining. Given that light rolling increases {100} recrystallization texture by strengthening stored energy difference, a final light rolling is carried out in each processing route. After annealing, in the sample experiencing medium rolling of 67% reduction with three inter-pass recovery annealing, preferred cube nucleation and strong cube texture are observed. The cube nucleation superiority is determined by the following reasons: firstly, based on the low stored energy of deformed matrix reduced by inter-pass recovery annealing, cube nucleation occurs by energy difference with surrounding matrix; secondly, high orientation gradient is obtained by the existence of various kinds of deformation bands, which are promoted by coarse microstructure of columnar grains and specific rolling methods.